Soil pollution with petroleum products and benzopyrene in unauthorized landfills

In recent years, the problem of pollution of the pedosphere has been particularly dominated by the cluttering of land with solid municipal waste. According to Rosprirodnadzor, since 2003, the amount of waste produced in the Russian Federation has increased by 5835.1 million tons. Agricultural land often suffers from clutter. There may be a fire in landfills. In the process of gorenje, benzapyrene is formed. Benzapyrene has a high migration capacity, therefore it spreads to territories significantly removed from the source of pollution. Bioaccumulation is characteristic of this substance. Therefore, benzapyrene poses a danger to the entire network of links in the food chain. The purpose of the study: to determine the level of accumulation of benzapyrene and petroleum products in soil littered with solid municipal waste. The research was carried out in the Nizhne-Zalegoshchenskoye rural settlement of the Zalegoshchensky district of the Oryol region at an unauthorized dump of municipal solid waste. The area of cluttered agricultural land was 6,109 hectares. Determination of the content of petroleum products and benzapyrene in the soil was carried out according to HDPE F 16.1:2.2.22-98 and MUK 4.1.1274-03, respectively. The results of chemical analysis showed soil contamination with residual amounts of petroleum products. There is an excess of their background content by 162 times. The study of soil samples from contaminated agricultural land as a result of unauthorized removal and disposal of municipal solid waste showed an excess of benzapyrene content in relation to the background and MPC in 4 out of 18 samples. The excess of the MPC of benzapyrene in the soil is 1.1 - 38.9 times. The value of the total accumulation of pollutants (Zc), calculated in relation to background values, reaches 257.7 units; in relation to MPC - 40.3 units. The average Zc is 108 units and 12.9 units, respectively.